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Browse Prior Art Database

Character Highlighting with All Points Addressable Printers

IP.com Disclosure Number: IPCOM000052583D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Bell, RR: AUTHOR [+2]

Abstract

All-points-addressable printers have special advantages that are not available with fixed location printers or impact printers. For example, in an ink jet or other all-points-addressable printer it is possible to perform a highlighting function merely by locating a spaced apart array of ink drops (picture elements (pels)) at predetermined locations.

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Character Highlighting with All Points Addressable Printers

All-points-addressable printers have special advantages that are not available with fixed location printers or impact printers. For example, in an ink jet or other all-points-addressable printer it is possible to perform a highlighting function merely by locating a spaced apart array of ink drops (picture elements (pels)) at predetermined locations.

Referring first to Fig. 1, assuming a 240 pel/inch all-points-addressable printer, for example, the IBM 6640 ink jet printer, a 10-pitch character will require 24 drop matrix positions (240/10) in the horizontal direction, and 40 matrix positions (240/6, assuming a 1/6-inch high character) in the vertical direction. By printing or allowing a drop to be positioned on the paper or other print-receiving medium at the locations 2N, 2N+1 in both the horizontal and vertical scans, where N is equal to, for example, 1, 3, 5, 7, 9, 11 for horizontal, and the same grouping plus 13, 15, 17, 19 in the vertical, a word or other character may be highlighted, such as the word "EMPHASIZED" shown in Fig. 2.

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